Should pregnant woman celebrate Mother’s Day?

Hi everyone! Sorry if this post has been made already will delete if it has but I haven’t read anything about it yet. So I’m currently pregnant with my first baby, today at work my coworker asked if my boyfriend is getting me anything for Mother’s Day ( my boyfriend did say he was) I told him yes and my other male coworker said why if you’re not a mom yet? Long story short my coworker said even if she hasn’t given birth she is still a mom no matter what and my other male coworker said that she isn’t considered a mom yet , but once I give birth then that’s when I become a mom and then I would be able to celebrate Mother’s Day . What do you guys think?